| 摘要 |
Combinations contg. I (R1=H, C1-3 alkyl; R2=H, C1˜C4 alkyl; R3=C1˜C4 alkyl, cycloalkyl, ph, haloaryl, etc; X=O, S) and a plant-growth regulator are defoliants. Thus, in greenhouse experiments, a combination 50g 1-phenyl-3-(1,2,3-thiadiazol-5-yl)urea and 50g S,S,S-tri-n-butyl-trithiophosphate ester /ha defoliated cotton by 43.5%, whereas the components applied by themselves were 34.8% and 4.4% effective, respectively.
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